SDM Magazine 5-Minute Tech Quiz, October 2013
24VAC
12VDC
6VDC
24VDC
1 amp of power for 7 hours.
7 amps of power for 1 hour.
1.75 amps of power for 4 hours.
All of the above
None of the above
5 percent
10 percent
15 percent
20 percent
What are you talking about? You size batteries based on load!
Add resistance to a circuit for supervision.
Limit current flow to one direction.
Retain power storage for later use.
All of the above
None of the above
Red, red, black
Red, yellow, black
Yellow, red, orange
Orange, orange, black
Resistor
Fuse
Circuit Breaker
PTC
Liquid Energy Diverters
Lighting Electrical Devices
Light Emitting Diodes
Light Energy Directors
Using an underrated transformer with larger wire is acceptable.
Using an overrated transformer with smaller wire is acceptable.
A properly sized transformer with a 24/4 wire doubled up is acceptable.
Transformers should be matched to the panel power supply specified by the manufacturer.
True
False
22AWG
24AWG
18/2AWG
6AWG
LED
Fuse
Circuit Breaker
Fixed temperature fire alarm thermostat
True
False
420mA+1A+0.6A=2.02A
5A+600mA+1.2A=12.2A
0.300A-1.2A+3200mA=4.7A
(3x1.2A)-400mA=4A
2 8 volt, 12 Amp batteries wired in series
2 12 volt, 8 Amp batteries wired in parallel
4 24 volt, 4 Amp batteries wired in parallel
4 4 volt, 24 Amp batteries wired in parallel
Is a delivery service used for packages.
Is backup battery power supply that engages during a light and power source outage and has a limited amount of current it can deliver.
Is a power supply that is used to provide regular, steady and unlimited power.
Require any batteries and runs completely off utility power.